Refactor: IRIS tracker geometry (ALICE 3) (#14693)

* wip(iris): import stash-pre-rebase changes

(cherry picked from commit d291e57a2f121c4f19f1fb7ccd8031328abc9ce8)

* Cleanup

* Cleanup

* Add sensor region and type in the registry

* VD sensor names, num of vols using registry

* Changes related to digitizer

* clang-format

* Add copyright header

Author: plariono

Detectors/Upgrades/ALICE3/Passive/src/Pipe.cxx

@@ -122,7 +122,8 @@ void Alice3Pipe::ConstructGeometry()
   // Add everything to the barrel
   barrel->AddNode(pipeVolume, 1, new TGeoTranslation(0, 30.f, 0));
 
-  pipeVolume->SetLineColor(kGreen + 3);
+  pipeVolume->SetLineColor(37);
+  pipeVolume->SetTransparency(0);
 }
 
 void Alice3Pipe::createMaterials()

Detectors/Upgrades/ALICE3/TRK/base/include/TRKBase/GeometryTGeo.h

@@ -43,6 +43,7 @@ class GeometryTGeo : public o2::detectors::DetMatrixCache
   };
   static const char* getTRKVolPattern() { return sVolumeName.c_str(); }
   static const char* getTRKLayerPattern() { return sLayerName.c_str(); }
+  static const char* getTRKPetalAssemblyPattern() { return sPetalAssemblyName.c_str(); }
   static const char* getTRKPetalPattern() { return sPetalName.c_str(); }
   static const char* getTRKPetalDiskPattern() { return sPetalDiskName.c_str(); }
   static const char* getTRKPetalLayerPattern() { return sPetalLayerName.c_str(); }
@@ -145,6 +146,7 @@ class GeometryTGeo : public o2::detectors::DetMatrixCache
 
   static std::string sVolumeName;
   static std::string sLayerName;
+  static std::string sPetalAssemblyName;
   static std::string sPetalName;
   static std::string sPetalDiskName;
   static std::string sPetalLayerName;